Stripper Lohan

The 'Mean Girls' star and her mother Dina, who often go clubbing together, were seen at the weekend leaving Sheila Kelley's S Factor workout.

The class is an aerobic exercise based on striptease and poll dance routines designed to tone up and increase fitness, according to website X17.

Lindsay has also joined Alcoholics Anonymous in a bid to clean up her lifestyle.

Although the 20-year-old actress was seen with a glass of champagne at the GQ awards two weeks ago, she has since been seen at Los Angeles hotspots Hollywood Social, Hyde and Chateau Marmont drinking water.

Lindsay has ditched her party friends including Paris Hilton, according to the New York Post newspaper.

A source said: "Her family just hope it lasts."

The 'Just My Luck' star was first seen going into an AA meeting in Los Angeles at 7.30am two weeks ago.

A source said: "She has attended several meetings and has hopefully decided to turn her life around - this time for good. She is out of control."

Her concerned mother Dina flew to Los Angeles to help her daughter.

Lindsay is currently shooting 'The Best Time of Our Lives' with British actress Keira Knightley.